If direction cosines of a vector of mag...

If direction cosines of a vector of magnitude 3 are `2/3 , - 9/3 , 2/3 and a gt 0 ` , then vector is _______

A

2i+j+2k

B

2i-j+2k

C

i-2j+2k

D

i+2j+2k

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The correct Answer is:

C

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